Disabling prediction causes a warning-spam.

[ElectroJr]

A client with cvar net.predict false will result in a spam of server-side late message warnings. I.e., messages like: net.ent: Got late MsgEntity! Diff: -15, msgT: 8290, cT: 8305, player: localhost@ElectroSR

Easiest fix is probably just to make the message's tick nullable & not specified when prediction is disabled.